Linux essay Four

Source: Internet
Author: User

1.PS-EF:

-e Displays all processes running on the system,-f displays some useful information columns

UID: The user responsible for initiating the process

PID: ID of the process

PPID: PID of the parent process (a process started by another process)

C: Processor utilization for the duration of the process

Stime: System time at process startup

TTY: The terminal device from which the process starts

Time: The cumulative CPU times required to run the process;

CMD: Name of the startup program

2. Search data:

grep T Files1

Search in file Files1 for the start of T

2.1 Regular Expressions: grep [tf] files search for strings starting with T or F

Greo tf files string starting with TF

3.BZIP2 Compressed Files Bunzip2 Extract Files

4.gzip Compressed Files

Gzcat: Display the contents of a compressed text file

Gunzip: Extracting Files

5.tar Archive File

6.

Linux essay Four

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